EP0607429B1 - Induktionsmotor der aussenläuferbauart - Google Patents

Induktionsmotor der aussenläuferbauart Download PDF

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Publication number
EP0607429B1
EP0607429B1 EP90916098A EP90916098A EP0607429B1 EP 0607429 B1 EP0607429 B1 EP 0607429B1 EP 90916098 A EP90916098 A EP 90916098A EP 90916098 A EP90916098 A EP 90916098A EP 0607429 B1 EP0607429 B1 EP 0607429B1
Authority
EP
European Patent Office
Prior art keywords
rotor
motor
stator
hub
impeller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP90916098A
Other languages
English (en)
French (fr)
Other versions
EP0607429A1 (de
EP0607429A4 (de
Inventor
Kazunobu Sato
Hiromasa Higasa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shikoku Research Institute Inc
Original Assignee
Shikoku Research Institute Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=17718341&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0607429(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Shikoku Research Institute Inc filed Critical Shikoku Research Institute Inc
Publication of EP0607429A1 publication Critical patent/EP0607429A1/de
Publication of EP0607429A4 publication Critical patent/EP0607429A4/de
Application granted granted Critical
Publication of EP0607429B1 publication Critical patent/EP0607429B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0673—Units comprising pumps and their driving means the pump being electrically driven the motor being of the inside-out type

Definitions

  • the present invention relates to an induction motor, more particularly an induction motor of the outer rotor-type in which rotor windings are arranged on the outer side of the stator winding.
  • Electric motors are widely used as a power unit for industrial machinery and traffic systems.
  • a rotatable rotor of the motor is generally installed inside the motor and a stationary stator is arranged outside the rotator. Accordingly, many other parts must be additionally installed in the motor to transmit the output of the motor to the machine.
  • An induction motor according to the invention is constituted as follows and according to claim 1.
  • a rotor frame with a rotor winding is rotatably supported by a stator frame with a stator winding.
  • the stator frame is provided with a hub, a stator winding is mounted on the outer periphery of the hub via a yoke, a rotary shaft is rotatably supported by a hole in the hub, the rotor frame is held at the outer end of the rotary shaft, and a rotor winding possessed by the rotor frame is arranged on the side of the outer periphery of the stator winding.
  • the constitution of the rotor arranged on the side of the outer periphery of the stator permits the outer periphery of the rotor to be used as an output transmission means to the machine, and accordingly the transmission mechanism can be simplified.
  • a permanent magnet is not installed on the rotor arranged on the outer side of the motor, the magnet intensity on the outer side of the motor is small, and adhesion of iron powder is reduced and durability of the machine is not impaired.
  • a driving torque is seldom affected by temperature, and the motor can be installed under any temperature condition.
  • Fig. 1 is a sectional view of an induction motor of the outer-type according to the invention.
  • Fig. 2 is a perspective view of a rotor according to the invention.
  • Fig. 3 is a perspective view of a squirrel-cage rotor according to the invention.
  • Figs. 4 and 5 show the application of an induction motor of the outer rotor-type to a centrifugal pump, wherein Fig. 4 is a schematic diagram of a centrifugal pump and Fig. 5 is a side sectional view thereof.
  • reference numerals 1, 2, 3 are an induction motor of the outer rotor-type, a stator, and a rotor, respectively.
  • the stator 2 possesses a stator frame 4 fixed to the machine, and the stator frame 4 is provided with a hub 5 formed cantileveredly in the body of the frame 4.
  • a yoke 6 made of many laminated steel plates is mounted on the side of the outer periphery of the hub 5, and a stator winding 7 is installed on the yoke 6.
  • Bearings 11 and 11 are installed in a hole 8 in the hub 5, and a rotary shaft 12 of the rotor 3 is rotatably supported by the bearings 11.
  • the rotor 3 includes a container-like rotor frame 13 made of steel plates and a rotary shaft 12 arranged at the center of the rotor frame 13.
  • a squirrel-cage rotor 14 as shown in Fig. 3, is fitted within the rotor frame 13 along the inner periphery thereof.
  • the squirrel-cage rotor 14 includes two end rings 15, 15 and many conductors 16 connecting both the end rings.
  • the squirrel-cage rotor 14 served as a rotor winding generates turning force relative to the stator winding 7.
  • An induction motor 1 is completed by installing a rotary shaft 12 in the bearings 11 additionally to the rotor 3.
  • the rotor 3 is rotated centering around the hole 8 in the hub 5 of the stator 2 by turning on the power supply because the squirrel-cage rotor 14 as a rotor winding is arranged so as to cover the outer periphery of the stator winding 7 mounted on the outer periphery of the hub 5.
  • the installation of the rotor 3 outside the stator 2 in the induction motor 1 permits the outer periphery of the rotor 3 to be used as a part of a driving machine ( equivalent to a rotating part in the present invention ), and the mechanism for the output transmission can be simplified.
  • FIGS. 4 and 5 show the induction motor 1 applied to a driving motor of a centrifugal pump 20.
  • a liquid absorbed through a suction pipe 23 into a spiral casing 21 is accelerated by the turning of an impeller 22 in the arrow direction in Fig. 4 and it is discharged through a drain pipe 24.
  • a driving motor 25 for turning the impeller 22 of the centrifugal pump 20 is constituted between the spiral casing 21 and the impeller 22.
  • the stator 2 with the stator frame 4 of the induction motor of the outer rotor-type is installed around the rotation axis 0-0 of the impeller 22 in the spiral casing 21 and a concavity 26 for fitting the rotor frame 13 therein is formed with respect to the axis.
  • the impeller 22 is rotated with the rotary shaft 12 centered around the hub 5 of the stator frame 4 and it is served as a centrifugal pump 20.
  • the squirrel-cage rotor 14 may be installed immediately inside the concavity 26 formed in the impeller 22 itself as a rotating part instead of the rotor frame 13, and accordingly the number of the constituent parts can be reduced.
  • the application of the induction motor of the outer rotor-type to the driving motor 25 of the centrifugal pump 20 permits of the slimming of the shape of the centrifugal pump projecting at the back of the impeller, of the shortening of the rotary shaft, of the reduction of the number of the driving parts, and of the simplification of the structure.
  • the driving torque does not come under the influence of a decline of magnet intensity owing to the installation of no permanent magnet on the outer side of the motor easily liable to become high temperature, and the motor can be installed under any temperature condition.
  • An induction motor of the outer rotor-type can be applied to various uses such as an electric automobile, a rolling machine, or a winding machine besides a centrifugal pump.
  • a wheel rim in the application of it to an electric automobile, can be used as a rotor frame, and in a rolling machine or a winding machine a rolling roller or a winding drum can be used as a rotor frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Induction Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (1)

  1. Induktionsmotor (1,25) vom Außenrotortyp für den Antrieb einer Kreiselpumpe, welche ein von einem Gehäuse (21) gestütztes, drehbares Flügelrad (22), eine in dem Gehäuse entgegengesetzt zu einem Drehzentrum (0-0) des Flügelrades ausgebildete Ansaugöffnung (23) und eine in dem Gehäuse in einer Drehrichtung des Flügelrades (22) ausgebildete Abflußöffnung (24) enthält, welcher Motor aufweist:
    - einen Stator (2) mit einem Statorrahmen (4) und einer Nabe (5),
    - einem Rotor (3) mit einer Rotorwicklung (14) und einer in einem Rotorrahmen (13) vorgesehenen drehbaren Welle (12), wobei die drehbare Welle (12) in der Mitte der Rotorwicklung (14) angeordnet ist,
    - und worin die drehbare Welle (12) des Rotorrahmens (13) durch das Nabenloch (8) hindurchgeht, wobei die Nabe (5) um die drehbare Welle (12) und innerhalb der Rotorwicklung (14) angeordnet ist,
    welcher Motor dadurch gekennzeichnet ist, daß
    - der Stator (2) an einem Stützbereich des Gehäuses (21) ausgebildet ist, welches das Flügelrad drehbar stützt, und die Nabe (5) zu der Ansaugöffnung hin vorsteht und eine Statorwicklung (7) und ein Nabenloch (8) hat;
    - der Rotorrahmen (13) in eine in dem Drehzentrum des Flügelrades ausgebildete Austiefung (26) eingepaßt ist, wobei sich die Austiefung auf der Seite befindet, die dem Stützbereich des Gehäuses (21) zugewandt ist; und
    - die Rotorwicklung (14) auf der Seite der inneren Oberfläche der Austiefung (26) angeordnet ist, so daß der Induktionsmotor (1,25) vom Außenrotortyp innerhalb der Austiefung (26) des Flügelrades (22) angeordnet ist.
EP90916098A 1989-11-06 1990-11-05 Induktionsmotor der aussenläuferbauart Revoked EP0607429B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP1287515A JP2604038B2 (ja) 1989-11-06 1989-11-06 遠心ポンプ
JP287515/89 1989-11-06
PCT/JP1990/001435 WO1991007004A1 (en) 1989-11-06 1990-11-05 Induction motor of the outer rotor-type

Publications (3)

Publication Number Publication Date
EP0607429A1 EP0607429A1 (de) 1994-07-27
EP0607429A4 EP0607429A4 (de) 1994-10-26
EP0607429B1 true EP0607429B1 (de) 1997-01-22

Family

ID=17718341

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90916098A Revoked EP0607429B1 (de) 1989-11-06 1990-11-05 Induktionsmotor der aussenläuferbauart

Country Status (5)

Country Link
EP (1) EP0607429B1 (de)
JP (1) JP2604038B2 (de)
KR (1) KR920702062A (de)
DE (1) DE69029818T2 (de)
WO (1) WO1991007004A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015117535A1 (zh) * 2014-02-10 2015-08-13 刘延杰 直筒轴式水泵

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100383809B1 (ko) * 2000-08-30 2003-05-12 남기영 자동 접지 장치
GB0111124D0 (en) 2001-05-05 2001-06-27 Spring Gregson W M Torque-generating apparatus
WO2016058170A1 (zh) * 2014-10-17 2016-04-21 三禾电器(福建)有限公司 一种电泵
GB2534196B (en) 2015-01-16 2017-06-14 Yasa Motors Ltd Axial flux machine
CN105048745A (zh) * 2015-08-25 2015-11-11 马小安 一种异步电动机

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495895A (en) † 1945-10-31 1950-01-31 Universal Oil Prod Co Fluid circulating device
FR1285808A (fr) * 1961-04-07 1962-02-23 Marelli & C Spa Ercole Moteur électrique pour la commande des métiers à tisser
US3514648A (en) * 1966-09-12 1970-05-26 Victor Company Of Japan Outer rotor type motor
US3597117A (en) † 1969-01-10 1971-08-03 Rotorn Inc Fan for narrow environments
US3596121A (en) * 1969-09-10 1971-07-27 Robbins & Myers Electric induction motor
DE2257509C2 (de) † 1972-11-23 1982-09-02 Papst-Motoren GmbH & Co KG, 7742 St Georgen Radialgebläse
JPS5184008A (ja) * 1975-01-20 1976-07-23 Matsushita Electric Ind Co Ltd Judodendoki
JPS5288706A (en) * 1976-01-21 1977-07-25 Hitachi Ltd External rotation type induction motor
JPS54962U (de) * 1977-06-06 1979-01-06
CH635900A5 (de) † 1978-02-15 1983-04-29 Papst Motoren Kg Axial kompaktes geblaese.
JPS56166761U (de) * 1980-05-12 1981-12-10
DE3439539A1 (de) † 1984-10-29 1986-05-07 Papst-Motoren GmbH & Co KG, 7742 St Georgen Ventilator
JP2540806B2 (ja) * 1986-06-13 1996-10-09 いすゞ自動車株式会社 車両の駆動装置
JPH0179363U (de) * 1987-11-12 1989-05-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015117535A1 (zh) * 2014-02-10 2015-08-13 刘延杰 直筒轴式水泵

Also Published As

Publication number Publication date
EP0607429A1 (de) 1994-07-27
KR920702062A (ko) 1992-08-12
JPH03150054A (ja) 1991-06-26
DE69029818T2 (de) 1997-08-21
JP2604038B2 (ja) 1997-04-23
DE69029818D1 (de) 1997-03-06
WO1991007004A1 (en) 1991-05-16
EP0607429A4 (de) 1994-10-26

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